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authorThomas Gleixner <tglx@linutronix.de>2011-02-08 17:28:12 +0100
committerThomas Gleixner <tglx@linutronix.de>2011-02-19 12:58:20 +0100
commit876dbd4cc1b35c1a4cb96a2be1d43ea0eabce3b4 (patch)
tree9be1e7e4cd4a4c9fadd98a9ac637020417215521 /include/linux/irq.h
parent2bdd10558c8d93009cb6c32ce9e30800fbb08add (diff)
downloadop-kernel-dev-876dbd4cc1b35c1a4cb96a2be1d43ea0eabce3b4.zip
op-kernel-dev-876dbd4cc1b35c1a4cb96a2be1d43ea0eabce3b4.tar.gz
genirq: Mirror irq trigger type bits in irq_data.state
That's the data structure chip functions get provided. Also allow them to signal the core code that they updated the flags in irq_data.state by returning IRQ_SET_MASK_OK_NOCOPY. The default is unchanged. The type bits should be accessed via: val = irqd_get_trigger_type(irqdata); and irqd_set_trigger_type(irqdata, val); Coders who access them directly will be tracked down and slapped with stinking trouts. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/linux/irq.h')
-rw-r--r--include/linux/irq.h26
1 files changed, 25 insertions, 1 deletions
diff --git a/include/linux/irq.h b/include/linux/irq.h
index 8da1782..be73c0a 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -46,7 +46,9 @@ typedef void (*irq_flow_handler_t)(unsigned int irq,
#define IRQ_TYPE_EDGE_BOTH (IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING)
#define IRQ_TYPE_LEVEL_HIGH 0x00000004 /* Level high type */
#define IRQ_TYPE_LEVEL_LOW 0x00000008 /* Level low type */
+#define IRQ_TYPE_LEVEL_MASK (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH)
#define IRQ_TYPE_SENSE_MASK 0x0000000f /* Mask of the above */
+
#define IRQ_TYPE_PROBE 0x00000010 /* Probing in progress */
/* Internal flags */
@@ -131,17 +133,20 @@ struct irq_data {
/*
* Bit masks for irq_data.state
*
+ * IRQD_TRIGGER_MASK - Mask for the trigger type bits
* IRQD_SETAFFINITY_PENDING - Affinity setting is pending
* IRQD_NO_BALANCING - Balancing disabled for this IRQ
* IRQD_PER_CPU - Interrupt is per cpu
* IRQD_AFFINITY_SET - Interrupt affinity was set
+ * IRQD_LEVEL - Interrupt is level triggered
*/
enum {
- /* Bit 0 - 7 reserved for TYPE will use later */
+ IRQD_TRIGGER_MASK = 0xf,
IRQD_SETAFFINITY_PENDING = (1 << 8),
IRQD_NO_BALANCING = (1 << 10),
IRQD_PER_CPU = (1 << 11),
IRQD_AFFINITY_SET = (1 << 12),
+ IRQD_LEVEL = (1 << 13),
};
static inline bool irqd_is_setaffinity_pending(struct irq_data *d)
@@ -164,6 +169,25 @@ static inline bool irqd_affinity_was_set(struct irq_data *d)
return d->state_use_accessors & IRQD_AFFINITY_SET;
}
+static inline u32 irqd_get_trigger_type(struct irq_data *d)
+{
+ return d->state_use_accessors & IRQD_TRIGGER_MASK;
+}
+
+/*
+ * Must only be called inside irq_chip.irq_set_type() functions.
+ */
+static inline void irqd_set_trigger_type(struct irq_data *d, u32 type)
+{
+ d->state_use_accessors &= ~IRQD_TRIGGER_MASK;
+ d->state_use_accessors |= type & IRQD_TRIGGER_MASK;
+}
+
+static inline bool irqd_is_level_type(struct irq_data *d)
+{
+ return d->state_use_accessors & IRQD_LEVEL;
+}
+
/**
* struct irq_chip - hardware interrupt chip descriptor
*
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